Demian Hespe
Senior Software Engineer, Query Engine at VAST Data
Munich, Bavaria, Germany
Summary
👤
Senior🎓
Top SchoolDemian Hespe is a Senior Software Engineer specializing in query engines and database internals, currently advancing execution-layer capabilities at VAST Data. With 11 years of experience, he previously optimized core components of a cloud data warehouse at Firebolt—adding native vector indexing, geospatial processing, advanced caching, and multi-cloud storage support. He holds a PhD from Karlsruhe Institute of Technology where he developed scalable graph algorithms, fault-tolerance techniques, and high-performance C++ systems, and led multiple award-winning research projects and student supervisions. Demian combines a research pedigree with production-grade engineering, routinely translating algorithmic ideas into low-latency, large-scale systems. Based in Munich, he brings deep expertise in C++, query performance, and distributed storage, and a knack for turning theoretical speedups into measurable product improvements.
10 years of coding experience
7 years of employment as a software developer
Doctor of Philosophy - PhD, Computer Science, Doctor of Philosophy - PhD, Computer Science at Karlsruhe Institute of Technology (KIT)Master of Science (M.Sc.), Computer Science, Master of Science (M.Sc.), Computer Science at Karlsruher Institut für Technologie (KIT)
German, English
Github Skills (65)
vertex10
sparse10
graph10
data-structures-c9
hierarchy9
raid9
xorg9
planning8
option-parser8
panic8
algorithm8
decomposition8
sorted-lists7
xcb7
vim7
Programming languages (11)
Github contributions (5)
KarlsruheMIS/KaMIS
Dec 2017 - Jan 2023
Maximum independent sets and vertex covers of large sparse graphs.
Contributions:1 review, 5 commits, 2 PRs in 5 years 1 month
maximumreductionsindependent-setsindependentsparse
Hespian/EdgeHierarchies
Dec 2018 - Mar 2020
More Hierarchy in Route Planning Using Edge Hierarchies
Contributions:177 commits, 4 pushes in 1 year 3 months
hierarchiesedgerouteplanningroute-planning
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